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https://github.com/minio/mc.git
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0dd32c1b26
Implement profiling command to start & download profiling data of a standalone or all nodes of a cluster. ``` 1. Start CPU profiling $ mc admin profiling start --type "cpu" myminio/ 2. Download latest profiling data under save under profiling.zip $ mc admin profiling stop myminio/ ```
107 lines
3.0 KiB
Go
107 lines
3.0 KiB
Go
/*
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* Minio Client (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"io"
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"io/ioutil"
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"os"
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"time"
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"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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"github.com/minio/mc/pkg/probe"
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)
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var adminProfilingStopCmd = cli.Command{
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Name: "stop",
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Usage: "Stop and download profiling data",
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Action: mainAdminProfilingStop,
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Before: setGlobalsFromContext,
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Flags: globalFlags,
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HideHelpCommand: true,
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CustomHelpTemplate: `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} [FLAGS] TARGET
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}
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EXAMPLES:
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2. Download latest profiling data in the current directory
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$ {{.HelpName}} myminio/
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`,
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}
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func checkAdminProfilingStopSyntax(ctx *cli.Context) {
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if len(ctx.Args()) != 1 {
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cli.ShowCommandHelpAndExit(ctx, "stop", 1) // last argument is exit code
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}
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}
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// mainAdminProfilingStop - the entry function of profiling stop command
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func mainAdminProfilingStop(ctx *cli.Context) error {
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// Check for command syntax
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checkAdminProfilingStopSyntax(ctx)
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// Get the alias parameter from cli
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args := ctx.Args()
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aliasedURL := args.Get(0)
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// Create a new Minio Admin Client
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client, err := newAdminClient(aliasedURL)
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if err != nil {
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fatalIf(err.Trace(aliasedURL), "Cannot initialize admin client.")
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return nil
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}
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// Create profiling zip file
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tmpFile, e := ioutil.TempFile("", "mc-profiling-")
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fatalIf(probe.NewError(e), "Unable to download profiling data.")
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// Ask for profiling data, which will come compressed with zip format
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zippedData, adminErr := client.DownloadProfilingData()
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fatalIf(probe.NewError(adminErr), "Unable to download profiling data.")
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// Copy zip content to target download file
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_, e = io.Copy(tmpFile, zippedData)
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fatalIf(probe.NewError(e), "Unable to download profiling data.")
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// Close everything
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zippedData.Close()
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tmpFile.Close()
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downloadPath := "profiling.zip"
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fi, e := os.Stat(downloadPath)
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if e == nil && !fi.IsDir() {
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e = os.Rename(downloadPath, downloadPath+"."+time.Now().Format("2006-01-02T15:04:05.999999-07:00"))
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fatalIf(probe.NewError(e), "Unable to create a backup of profiling.zip")
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} else {
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if !os.IsNotExist(e) {
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fatal(probe.NewError(e), "Unable to download profiling data.")
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}
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}
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fatalIf(probe.NewError(os.Rename(tmpFile.Name(), downloadPath)), "Unable to download profiling data.")
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console.Infof("Profiling data successfully downloaded as %s\n", downloadPath)
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return nil
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}
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